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Related to planum: planum sphenoidale


1. a flat surface determined by the position of three points in space.
2. an imaginary flat surface that divides the body into sections (see accompanying figure). adj., adj pla´nar.
3. a specified level, as the plane of anesthesia.
4. to rub away or abrade; see also planing and plastic surgery.
5. a superficial incision in the wall of a cavity or between tissue layers, especially in plastic surgery, made so that the precise point of entry into the cavity or between the layers can be determined.
Planes of section. Transverse, sagittal, and frontal planes of the body. From Applegate, 2000.
coronal p's frontal p's.
datum plane a given horizontal plane from which craniometric measurements are made.
frontal p's those planes passing longitudinally through the body, an organ, or a part, at right angles to the median plane and dividing into front and back portions. Called also coronal planes.
horizontal plane transverse plane.
median plane one passing longitudinally through the body, an organ, or a part from front to back, dividing it into right and left halves.
sagittal p's vertical planes through the body parallel to the median plane or the sagittal suture, dividing the body into unequal left and right portions.
transverse plane one passing horizontally through the body, an organ, or a part at right angles to the median and frontal planes, dividing it into upper and lower portions. Called also horizontal plane.
vertical plane one perpendicular to a horizontal plane, such as a sagittal plane, median plane, or frontal plane.


(plān), [TA]
1. A two-dimensional flat surface.
2. An imaginary surface formed by extension of a point through any axis or two definite points, in reference especially to craniometry and to pelvimetry.
Synonym(s): planum
[L. planus, flat]


/pla·num/ (pla´num) pl. pla´na   [L.] plane.


Temazepam, see there.


, pl. plana (plā'nŭm, -nă) [TA]
A plane or flat surface.
See also: plane
[L. plane]


pl. plana [L.] plane.

planum nasale
see nasal plane.
planum nasolabiale
the plate of moist, highly cornified epidermis, completely hairless, containing tubular merocrine glands around the nostrils and upper lip which is characteristic of the muzzle of cattle.
planum rostrale
the front plate of the muzzle of pigs; highly cornified epithelium, contains many tubular merocrine glands and a few fine hairs.

Patient discussion about planum

Q. what does the term flat affect means?

A. "Flat affect: A severe reduction in emotional expressiveness. People with depression and schizophrenia often show flat affect. A person with schizophrenia may not show the signs of normal emotion, perhaps may speak in a monotonous voice, have diminished facial expressions, and appear extremely apathetic. Also known as blunted affect." :)
couldn't said it better myself...:)

Q. Can flat feet be repaired by surgery? I have flat feet and I’m looking for all sorts of treatments for it- I heard there is a surgery for it- is it helpful?

A. As far as I know- they don’t treat flat feet that are asymptomatic. So first of all check if it bothers you. secondly there are 2 kinds of flat feet- rigid and flexible. There are different and treated differently. Not always a surgery (which is very painful and costly) is needed– I went to a Rolf method therapist by the advice of my orthopedic and it’s much better now. Ask an orthopedic.

Q. I think my son has flat foot, how to tell for sure? I didn't notice it before, he is 3 years old now and all shoes hurt him. Does it mean he has flat foot? what else can it be?

A. Pes planus (flat foot) is not a rare condition in toddlers, and may resolves spontaneously as the child grows. It is diagnosed clinically, i.e. by a doctor such as pediatrician or pediatric orthopedic surgeon, and radiographs are not universally indicated

More discussions about planum
References in periodicals archive ?
In the right hemisphere, the parietal planum (PP) tends to be long, the supramarginal gyrus is taller, and the angular gyrus is more anterior and superior (Figure 6).
planum colonies will limit growth, and that large colonies will show more evidence of reproductive activity than small colonies.
Planum temporale asymmetry, reappraisal since Geschwind and Levitsky, Neuropsychologia, 25, 853-868.
Methane ice, which is much less volatile at Pluto's temperatures, is not restricted to the Sputnik Planum glacier like nitrogen and carbon monoxide.
Perhaps the mysterious hills are fragments of water ice from the mountains that partially surround Sputnik Planum.
Two clusters of rugged mountains, Hillary Montes and Norgay Montes (named for the first climbers to reach the summit of Mount Everest), frame the southern rim of Sputnik Planum and rise up to 3 1/2 km (11,000 feet) in spots.
Three weeks later, the lander beating Opportunity touched down at the flatter Meridiani Planum near the Martian equator.
Opportunity was working on the Meridiani Planum, a flat plain containing the iron-rich mineral grey haematite.
Opportunity is going to Meridiani Planum, a place where we see a mineral that usually forms because of liquid water.
planum, drainage, curbs, base courses, plastic coating, linings, installations; renovation and completion of a track approx.
According to NASA, the new image includes high-resolution views of Pluto that extend to the center of "Sputnik Planum," also called (http://www.